<?php

/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Service
 * @subpackage Amazon
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Item.php 16211 2009-06-21 19:23:55Z thomas $
 */


/**
 * @category   Zend
 * @package    Zend_Service
 * @subpackage Amazon
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Service_Amazon_Item
{
	/**
	 * @var string
	 */
	public $ASIN;

	/**
	 * @var string
	 */
	public $DetailPageURL;

	/**
	 * @var int
	 */
	public $SalesRank;

	/**
	 * @var int
	 */
	public $TotalReviews;

	/**
	 * @var int
	 */
	public $AverageRating;

	/**
	 * @var string
	 */
	public $SmallImage;

	/**
	 * @var string
	 */
	public $MediumImage;

	/**
	 * @var string
	 */
	public $LargeImage;

	/**
	 * @var string
	 */
	public $Subjects;

	/**
	 * @var Zend_Service_Amazon_OfferSet
	 */
	public $Offers;

	/**
	 * @var Zend_Service_Amazon_CustomerReview[]
	 */
	public $CustomerReviews = array();

	/**
	 * @var Zend_Service_Amazon_SimilarProducts[]
	 */
	public $SimilarProducts = array();

	/**
	 * @var Zend_Service_Amazon_Accessories[]
	 */
	public $Accessories = array();

	/**
	 * @var array
	 */
	public $Tracks = array();

	/**
	 * @var Zend_Service_Amazon_ListmaniaLists[]
	 */
	public $ListmaniaLists = array();

	protected $_dom;


	/**
	 * Parse the given <Item> element
	 *
	 * @param  DOMElement $dom
	 * @return void
	 */
	public function __construct(DOMElement $dom)
	{
		$xpath = new DOMXPath($dom->ownerDocument);
		$xpath->registerNamespace('az', 'http://webservices.amazon.com/AWSECommerceService/2005-10-05');
		$this->ASIN = $xpath->query('./az:ASIN/text()', $dom)->item(0)->data;

		$result = $xpath->query('./az:DetailPageURL/text()', $dom);
		if ($result->length == 1) {
			$this->DetailPageURL = $result->item(0)->data;
		}

		if ($xpath->query('./az:ItemAttributes/az:ListPrice', $dom)->length >= 1) {
			$this->CurrencyCode = (string) $xpath->query('./az:ItemAttributes/az:ListPrice/az:CurrencyCode/text()', $dom)->item(0)->data;
			$this->Amount = (int) $xpath->query('./az:ItemAttributes/az:ListPrice/az:Amount/text()', $dom)->item(0)->data;
			$this->FormattedPrice = (string) $xpath->query('./az:ItemAttributes/az:ListPrice/az:FormattedPrice/text()', $dom)->item(0)->data;
		}

		$result = $xpath->query('./az:ItemAttributes/az:*/text()', $dom);
		if ($result->length >= 1) {
			foreach ($result as $v) {
				if (isset($this->{$v->parentNode->tagName})) {
					if (is_array($this->{$v->parentNode->tagName})) {
						array_push($this->{$v->parentNode->tagName}, (string) $v->data);
					} else {
						$this->{$v->parentNode->tagName} = array($this->{$v->parentNode->tagName}, (string) $v->data);
					}
				} else {
					$this->{$v->parentNode->tagName} = (string) $v->data;
				}
			}
		}

		foreach (array('SmallImage', 'MediumImage', 'LargeImage') as $im) {
			$result = $xpath->query("./az:ImageSets/az:ImageSet[position() = 1]/az:$im", $dom);
			if ($result->length == 1) {
				/**
				 * @see Zend_Service_Amazon_Image
				 */
				require_once 'Zend/Service/Amazon/Image.php';
				$this->$im = new Zend_Service_Amazon_Image($result->item(0));
			}
		}

		$result = $xpath->query('./az:SalesRank/text()', $dom);
		if ($result->length == 1) {
			$this->SalesRank = (int) $result->item(0)->data;
		}

		$result = $xpath->query('./az:CustomerReviews/az:Review', $dom);
		if ($result->length >= 1) {
			/**
			 * @see Zend_Service_Amazon_CustomerReview
			 */
			require_once 'Zend/Service/Amazon/CustomerReview.php';
			foreach ($result as $review) {
				$this->CustomerReviews[] = new Zend_Service_Amazon_CustomerReview($review);
			}
			$this->AverageRating = (float) $xpath->query('./az:CustomerReviews/az:AverageRating/text()', $dom)->item(0)->data;
			$this->TotalReviews = (int) $xpath->query('./az:CustomerReviews/az:TotalReviews/text()', $dom)->item(0)->data;
		}

		$result = $xpath->query('./az:EditorialReviews/az:*', $dom);
		if ($result->length >= 1) {
			/**
			 * @see Zend_Service_Amazon_EditorialReview
			 */
			require_once 'Zend/Service/Amazon/EditorialReview.php';
			foreach ($result as $r) {
				$this->EditorialReviews[] = new Zend_Service_Amazon_EditorialReview($r);
			}
		}

		$result = $xpath->query('./az:SimilarProducts/az:*', $dom);
		if ($result->length >= 1) {
			/**
			 * @see Zend_Service_Amazon_SimilarProduct
			 */
			require_once 'Zend/Service/Amazon/SimilarProduct.php';
			foreach ($result as $r) {
				$this->SimilarProducts[] = new Zend_Service_Amazon_SimilarProduct($r);
			}
		}

		$result = $xpath->query('./az:ListmaniaLists/*', $dom);
		if ($result->length >= 1) {
			/**
			 * @see Zend_Service_Amazon_ListmaniaList
			 */
			require_once 'Zend/Service/Amazon/ListmaniaList.php';
			foreach ($result as $r) {
				$this->ListmaniaLists[] = new Zend_Service_Amazon_ListmaniaList($r);
			}
		}

		$result = $xpath->query('./az:Tracks/az:Disc', $dom);
		if ($result->length > 1) {
			foreach ($result as $disk) {
				foreach ($xpath->query('./*/text()', $disk) as $t) {
					// TODO: For consistency in a bugfix all tracks are appended to one single array
					// Erroreous line: $this->Tracks[$disk->getAttribute('number')] = (string) $t->data;
					$this->Tracks[] = (string) $t->data;
				}
			}
		} else if ($result->length == 1) {
			foreach ($xpath->query('./*/text()', $result->item(0)) as $t) {
				$this->Tracks[] = (string) $t->data;
			}
		}

		$result = $xpath->query('./az:Offers', $dom);
		$resultSummary = $xpath->query('./az:OfferSummary', $dom);
		if ($result->length > 1 || $resultSummary->length == 1) {
			/**
			 * @see Zend_Service_Amazon_OfferSet
			 */
			require_once 'Zend/Service/Amazon/OfferSet.php';
			$this->Offers = new Zend_Service_Amazon_OfferSet($dom);
		}

		$result = $xpath->query('./az:Accessories/*', $dom);
		if ($result->length > 1) {
			/**
			 * @see Zend_Service_Amazon_Accessories
			 */
			require_once 'Zend/Service/Amazon/Accessories.php';
			foreach ($result as $r) {
				$this->Accessories[] = new Zend_Service_Amazon_Accessories($r);
			}
		}

		$this->_dom = $dom;
	}


	/**
	 * Returns the item's original XML
	 *
	 * @return string
	 */
	public function asXml()
	{
		return $this->_dom->ownerDocument->saveXML($this->_dom);
	}
}
